2024 Cedar S4 Physics Prelim P2

CEDAR GIRLS’ SECONDARY SCHOOL Preliminary Examination 2024 Secondary 4 CANDIDATE NAME CLASS INDEX NUMBER CENTRE/ INDEX NO / PHYSICS 6091/02 Paper 2 Structured Questions 23 August 2024 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of this page. Write in dark blue or black pen. You may use a HB pencil for any diagrams, graphs. Do not use staples, paper clips, glue, or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Paper 1 40 Paper 2 Section A 1 4 2 6 3 3 4 8 5 9 6 5 7 8 8 6 9 10 10 11 Section B 11 10 12 10 Deductions sf Total (P2) 80 Overall Total % This document consists of 19 printed pages. [Turn over

2 For Examiner’s Use Section A (70 marks) Answer all questions in this section. 1 Fig. 1.1 shows a water wheel used in a farm. Water entering at the top turns the wheel about the hub. Fig. 1.1 The water wheel moves in a circular path at a constant speed of 2.5 m/s. (a) (i) State the change in speed of point C as it moves to position D. change in speed = …………………. [1] (ii) Determine the magnitude of the change in velocity of point C as it moves to position D. change in velocity = …………………… [1] (b) A Cedarian suggest that the water in the wheel undergoes acceleration. Discuss if she is correct. ………………………………………………………………………………………………….. ………………………………………………………………………..………………………… …………………………………………………………………………………………… [2] water in hub spokes D C L

3 [Turn over For Examiner’s Use 2 (a) A girl of weight 550 N is playing on a see-saw with her brother. Fig. 2.1 shows her brother of weight W sitting 1.1 m to the right of the balance point. Fig. 2.1 (not to scale) The see-saw is balanced when the girl sits 0.86 m to the left of the balance point. (i) Determine the weight of the brother, W. weight = ……………..... [2] (ii) The girl and her brother slide an equal distance along the see-saw away from each other at the same time. Describe and explain what happens. ……………………………………………………………………………………………..……